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在線教務(wù)輔導(dǎo)網(wǎng)HTTP/WWWSHANGFUWANGCOM更多課程配套課件資源請訪問在線教務(wù)輔導(dǎo)網(wǎng)63EARTHQUAKERESISTANTSTRUCTURALSYSTEMS2018/1/102NRIGIDFRAMESTRUCTURES框架NINFILLEDFRAMESTRUCTURES填充框架NSHEARWALLS剪力墻NBRACEDFRAMES支撐框架NWALLFRAMESTRUCTURES框架剪力墻結(jié)構(gòu)NFRAMEDTUBESTRUCTURES框筒NTUBEINTUBEORHULLCORESTRUCTURESNBRACEDTUBESTRUCTURES桁架筒NBUNDLEDTUBESTRUCTURES束筒RIGIDFRAMESTRUCTURES框架NRIGIDFRAMESTRUCTURESTYPICALLYCOMPRISEFLOORDIAPHRAGMS5DAIEFRAM隔板SUPPORTEDONBEAMSWHICHLINKTOCONTINUOUSCOLUMNSHORIZONTALTRUSSINGNTHEJOINTSBETWEENBEAMANDCOLUMNSAREUSUALLYCONSIDEREDTOBERIGIDRIGIDFRAMESTRUCTURES框架NRIGIDFRAMESTRUCTURESCARRYGRAVITYLOADSLATERALLOADSNTHEFRAMESAREEXPECTEDTOCARRYTHEGRAVITYLOADSTHROUGHTHEFLEXURALACTIONOFTHEBEAMSANDTHEPROPPING5PRCPIN支撐ACTIONOFTHECOLUMNSFLEXURALACTIONNNEGATIVEMOMENTSAREINDUCEDINTHEBEAMADJACENTE5DVEISENTTOTHECOLUMNSCAUSINGTHEMIDSPANPOSITIVEMOMENTTOBESIGNIFICANTLYLESSTHANINASIMPLYSUPPORTEDSPANMIDSPANPOSITIVEMOMENTLQNLATERALLOADS,IMPOSEDWITHINTHEPLANEOFTHEFRAME,ARERESISTEDTHROUGHTHEDEVELOPMENTOFBENDINGMOMENTSINTHEBEAMSANDCOLUMNSNFRAMEDBUILDINGSOFTENEMPLOYMOMENTRESISTANTFRAMESINTWOORTHOGONALC5WCENL正交的DIRECTIONS,INWHICHCASETHECOLUMNELEMENTSARECOMMONTOBOTHFRAMESTHECOLUMNELEMENTISCOMMONTOBOTHFRAMESNRIGIDFRAMESTRUCTURESAREWELLSUITEDTOACCOMMODATE使適應(yīng)HIGHLEVELSOFINELASTIC7INI5LASTIKDEFORMATIONNWHENACAPACITYDESIGNAPPROACH承載力設(shè)計法ISEMPLOYED,ASSIGNTHEENDZONESOFTHEFLEXURALBEAMSTOACCEPTTHEPOSTELASTICDEFORMATIONEXPECTEDWEAKBEAMDESIGNTHECOLUMNMEMBERSSUCHTHATTHEIRDEPENDABLE可靠的STRENGTHISINEXCESSOF超過THEOVERSTRENGTHCAPACITYOFTHEBEAMHINGESNTHEREBYENSURINGTHEYREMAINWITHINTHEIRELASTICRESPONSERANGEREGARDLESSOFTHEINTENSITYOFGROUNDSHAKINGSTRONGCOLUMNOVERSTRENGTHCAPACITYOFTHEBEAMHINGESNRIGIDFRAMESTRUCTURESARE,HOWEVER,OFTENQUITEFLEXIBLEWHENTHEYAREDESIGNEDTOBEFULLYDUCTILE,SPECIALPROVISIONSAREOFTENNEEDEDTOPREVENTTHEPREMATUREONSET5CNSETOFDAMAGETONONSTRUCTURALCOMPONENTSNRIGIDFRAMECONSTRUCTIONREINFORCEDCONCRETEBUILDINGS(IDEALLYSUITEDFOR)STEELFRAMEBUILDINGS(COSTLY)NRIGIDFRAMECONSTRUCTIONISIDEALLYAI5DIELISUITEDFORREINFORCEDCONCRETEBUILDINGBECAUSEOFTHEINHERENTIN5HIERENT固有的RIGIDITYOFREINFORCEDCONCRETEJOINTSNTHERIGIDFRAMEFORMISALSOUSEDFORSTEELFRAMEBUILDINGSBUTMOMENTRESISTANTCONNECTIONSINSTEELTENDTOBECOSTLYTHESIZESOFTHECOLUMNSANDGIRDERSATANYLEVELOFARIGIDFRAMEAREDIRECTLYINFLUENCEDBYTHEMAGNITUDEOFTHEEXTERNALSHEARATTHATLEVEL,ANDTHEYTHEREFOREINCREASETOWARDTHEBASENCONSEQUENTLY,THEDESIGNOFTHEFLOORFRAMINGCANNOTBEREPETITIVERI5PETITIVASITISINSOMEBRACEDFRAMESNAFURTHERRESULTISTHATSOMETIMESITISNOTPOSSIBLEINTHELOWESTSTOREYSTOACCOMMODATETHEREQUIREDDEPTHOFGIRDERWITHINTHENORMALCEILINGSPACEINFILLEDFRAMESTRUCTURES填充框架NCOLUMNANDGIRDERFRAMINGOFREINFORCEDCONCRETE,ORSOMETIMESSTEEL,ISINFILLEDBYPANELSOFBRICKWORK,ORCASTINPLACECONCRETEINFILLEDFRAMESTRUCTURES填充框架NWHENANINFILLEDFRAMEISSUBJECTEDTOLATERALLOADING,THEINFILLBEHAVESEFFECTIVELYASASTRUTALONGITSCOMPRESSIONDIAGONALTOBRACETHEFRAMEINFILLEDFRAMESTRUCTURES填充框架NBECAUSETHEINFILLSSERVEALSOASEXTERNALWALLSORINTERNALPARTITIONS,THESYSTEMISANECONOMICALWAYOFSTIFFENINGANDSTRENGTHENINGTHESTRUCTURESHEARWALLS剪力墻NASHEARWALLISAVERTICALSTRUCTURALELEMENTTHATRESISTSLATERALFORCESINTHEPLANEOFTHEWALLTHROUGHSHEARANDBENDINGSHEARWALLS剪力墻NSHEARWALLSCONCRETEWALLSMASONRYWALLSHIGHINPLANSTIFFNESSHIGHSTRENGTHSHEARWALLS剪力墻NASHEARWALLACTSASABEAMCANTILEVEREDOUTOFTHEGROUNDORFOUNDATIONNPARTOFITSSTRENGTHDERIVESFROMITSDEPTHNSHEARWALLSAREORIENTEDINONEDIRECTION,SOONLYLATERALFORCESINTHISDIRECTIONCANBERESISTEDNSYMMETRYHASABEARINGON關(guān)系到,影響到WHETHERTORSIONALEFFECTSWILLBEPRODUCEDNSHEARWALLSSYMMETRICALINTHEPLANEOFLOADINGNSHEARWALLSATTHEINTERIOROFAMULTISTOREYBUILDINGNWALLSENCLOSINGSTAIRWAYS,ELEVATORSHAFTS,ANDMECHANICALCHASES(CHANNEL)AREMOSTLYSOLIDANDRUNTHEENTIREHEIGHTOFTHEBUILDING,THEYAREOFTENUSEDFORSHEARWALLNSHEARWALLSINBOTHDIRECTIONSSHEARWALLS剪力墻NSHEARWALLSDONOTNEEDTOBESYMMETRICALINABUILDING,BUTSYMMETRYISPREFERREDTOAVOIDTORSIONALEFFECTSDESIGNOFSHEARWALLSHEARWALLSREMAINNOMINALLYELASTICUNDERLOWORMODERATEINTENSITYLOADINGSPOSTELASTICDEFORMATIONSWILLDEVELOPWITHINTHELOWERPORTIONOFTHEWALLUNDERHIGHINTENSITYLOADINGS,GENERALLYCONSIDEREDTOEXTENDOVERAHEIGHTOFTWICETHEWALLLENGTHABOVETHEFOUNDATIONSUPPORTSYSTEM剪力墻設(shè)置底部加強部位NGOODPOSTELASTICRESPONSECANBEREADILYACHIEVEDWITHINTHISREGIONOFREINFORCEDCONCRETEORMASONRYSHEARWALLSTHROUGHTHEPROVISIONOFADEQUATECONFINEMENTOFTHEPRINCIPALREINFORCINGSTEELANDTHEPROHIBITIONOFLAPSPLICESOFREINFORCINGBARSCOUPLEDSHEARWALL聯(lián)肢墻NCOUPLINGBEAMS連梁COUPLEADJACENTMORESLENDERSHEARWALLS連梁剪切破壞SHEARFAILUREOFCOUPLINGBEAMS連梁、墻肢破壞NTHECOUPLINGBEAMSTHENBECOMESHEARLINKSBETWEENTHETWOWALLSBRACEDFRAMES支撐框架NABRACEDFRAMEISATRUSSSYSTEMOFTHECONCENTRICORECCENTRICTYPEINWHICHTHELATERALFORCESARERESISTEDTHROUGHAXIALSTRESSESINTHEMEMBERS桿件軸向拉伸或壓縮BRACEDFRAMES支撐框架NATONEENDOFTHEBUILDINGTWOBAYSAREBRACEDANDATTHEOTHERENDONLYONEBAYISBRACEDNBUILDINGISONLYBRACEDINONEDIRECTIONANDTHEDIAGONALMEMBERMAYBEEITHERINTENSIONORCOMPRESSION,DEPENDINGONWHICHWAYTHEFORCEISAPPLIEDBRACEDFRAMES支撐框架NASINGLEDIAGONALCOMPRESSIONMEMBERINONEBAYCANBEUSEDTOBRACEAGAINSTLATERALLOADSCOMINGFROMEITHERDIRE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